public async Task <IReadOnlyCollection <ICommittedDomainEvent> > CommitEventsAsync(
IIdentity id,
IReadOnlyCollection <SerializedEvent> serializedEvents,
CancellationToken cancellationToken)
{
if (!serializedEvents.Any())
{
return(new ICommittedDomainEvent[] { });
}
var eventDataModels = serializedEvents
.Select((e, i) => new EventDataModel
{
AggregateId = id.Value,
AggregateName = e.Metadata[MetadataKeys.AggregateName],
BatchId = Guid.Parse(e.Metadata[MetadataKeys.BatchId]),
Data = e.SerializedData,
Metadata = e.SerializedMetadata,
AggregateSequenceNumber = e.AggregateSequenceNumber,
})
.ToList();
_log.Verbose(
"Committing {0} events to MSSQL event store for entity with ID '{1}'",
eventDataModels.Count,
id);
const string sql = @"
INSERT INTO
EventFlow
(BatchId, AggregateId, AggregateName, Data, Metadata, AggregateSequenceNumber)
VALUES
(@BatchId, @AggregateId, @AggregateName, @Data, @Metadata, @AggregateSequenceNumber);
SELECT last_insert_rowid() FROM EventFlow";
IReadOnlyCollection <long> ids;
try
{
ids = await _connection.InsertMultipleAsync <long, EventDataModel>(
Label.Named("sqlite-insert-events"),
cancellationToken,
sql,
eventDataModels)
.ConfigureAwait(false);
}
catch (SQLiteException e)
{
if (e.ResultCode == SQLiteErrorCode.Constraint)
{
throw new OptimisticConcurrencyException(e.ToString(), e);
}
throw;
}
eventDataModels = eventDataModels
.Zip(
ids,
(e, i) =>
{
e.GlobalSequenceNumber = i;
return(e);
})
.ToList();
return(eventDataModels);
}